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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 2, Iss. 9 — Sep. 1, 2011
  • pp: 2679–2689

Non-thermal effects of terahertz radiation on gene expression in mouse stem cells

Boian S. Alexandrov, Kim Ø. Rasmussen, Alan R. Bishop, Anny Usheva, Ludmil B. Alexandrov, Shou Chong, Yossi Dagon, Layla G. Booshehri, Charles H. Mielke, M. Lisa Phipps, Jennifer S. Martinez, Hou-Tong Chen, and George Rodriguez  »View Author Affiliations

Biomedical Optics Express, Vol. 2, Issue 9, pp. 2679-2689 (2011)

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In recent years, terahertz radiation sources are increasingly being exploited in military and civil applications. However, only a few studies have so far been conducted to examine the biological effects associated with terahertz radiation. In this study, we evaluated the cellular response of mesenchymal mouse stem cells exposed to THz radiation. We apply low-power radiation from both a pulsed broad-band (centered at 10 THz) source and from a CW laser (2.52 THz) source. Modeling, empirical characterization, and monitoring techniques were applied to minimize the impact of radiation-induced increases in temperature. qRT-PCR was used to evaluate changes in the transcriptional activity of selected hyperthermic genes. We found that temperature increases were minimal, and that the differential expression of the investigated heat shock proteins (HSP105, HSP90, and CPR) was unaffected, while the expression of certain other genes (Adiponectin, GLUT4, and PPARG) showed clear effects of the THz irradiation after prolonged, broad-band exposure.

© 2011 OSA

OCIS Codes
(170.1420) Medical optics and biotechnology : Biology
(170.1530) Medical optics and biotechnology : Cell analysis
(170.7160) Medical optics and biotechnology : Ultrafast technology

ToC Category:
Optical Therapies and Photomodificaton

Original Manuscript: June 27, 2011
Revised Manuscript: August 11, 2011
Manuscript Accepted: August 17, 2011
Published: August 23, 2011

Boian S. Alexandrov, Kim Ø. Rasmussen, Alan R. Bishop, Anny Usheva, Ludmil B. Alexandrov, Shou Chong, Yossi Dagon, Layla G. Booshehri, Charles H. Mielke, M. Lisa Phipps, Jennifer S. Martinez, Hou-Tong Chen, and George Rodriguez, "Non-thermal effects of terahertz radiation on gene expression in mouse stem cells," Biomed. Opt. Express 2, 2679-2689 (2011)

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